Fridge Leftovers Manager – Online Track & Expiry Alerts
Log leftovers with date stored and set visual alerts when they need to be eaten. Reduce food waste. Local storage.
UD5 Toolkit
Log leftovers with date stored and set visual alerts when they need to be eaten. Reduce food waste. Local storage.
Enter air and snow temperature plus humidity to get the right glide wax color (Swix/Toko). Perfect kick and glide.
Check how many pages a PDF has without uploading it (uses FileReader). Also shows file size and title if available. Simple and fast client-side tool.
A tiny tool that hooks into the console and lets you export all messages to a file. Helpful for non‑technical bug reporting.
Generate a printable pace band for ultra distances with mile/km splits and cumulative time. Adjust for terrain.
Count total DOM nodes on the current page and show warnings if limits exceed best practices. Keep the DOM lean.
Rate symptoms severity daily and add notes. Visual pain map. Export for doctor visit. Private local storage.
Compare different insulated containers by their ice retention time based on ambient temperature. Help choose the right bottle for a hot hike.
Enter a full URL and get all query parameters in a clean table with decoded values. Quickly see UTM and tracking params.
Create a shadow that appears when a container is scrollable. Pure CSS using background attachments. Copy the style easily.
Create circular and elliptical clip paths visually. Adjust radius and position. Copy the CSS. For avatars and masks.
Simulate memory page reference strings with FIFO, LRU, and Optimal algorithms. See page fault count. OS concept demo.
Fetch a page and list all loaded assets (CSS, JS, images) with their sizes. See total page weight. Quick performance check.
Adjust speed and see how dynamic pressure changes. Visualize how a pitot tube measures airspeed. Aviation & physics demo.
Calculate the probability of exactly k successes in n independent Bernoulli trials. Step-by-step result. Local.
Estimate how long it takes to download/upload a file given bandwidth speed. Also convert between bits and bytes.
See the current state of a Service Worker for your page: installing, waiting, active. Unregister or skip waiting. Developer utility.
Create a custom cookie consent banner with text, button styles, and colors. Copy the ready‑to‑use HTML/CSS/JS snippet.
Build a conic gradient with any number of color stops. Visual editor. Ideal for creating pie charts or colorful spinners.
Plan a party or event budget by category (venue, food, decorations). See total and cost per guest. Export summary.
Connect to a WebTransport server and exchange data over QUIC. See latency and throughput. Perfect for exploring low‑latency real‑time APIs.
Explore the contents of the Cache Storage API for your domain. See cached requests and their sizes. Debug offline apps.
See how align‑items: baseline works in grid to align different font sizes on the same baseline. Visual guide.
Load any variable font from Google Fonts or local file and play with weight, width, slant, and custom axes. Download CSS.
Compare different grid track sizing methods: fr, auto, minmax(), and fixed values. See how they respond to content.
Click for a curated motivational quote from famous figures. Share on social media with a single tap. Uplifting.
Paste a list of foreground/background color pairs and instantly see which pass AA/AAA. Perfect for checking entire style guides.
Get endless 'Never Have I Ever' statements for your group. Clean and spicy modes. No installation, just pick up and play.
Generate a CSS background that shows a baseline grid. Adjust line‑height and offset. Perfect for aligning text.
A completely black page to save battery on OLED devices. Click to go fullscreen. Simple utility.